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Method and system of editing multiple spot color tables associated with a printing system

a printing system and spot color technology, applied in the field of methods and systems for printer color management, can solve the problems of manual adjustment of spot color, too difficult or time-consuming, and accept the potentially large accuracy errors that can occur

Inactive Publication Date: 2015-08-11
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem associated with conventional printing systems which include functionality for a user to create custom spot colors is associated with the ability of the printing device to operate in one of a plurality of states / modes, where each state / mode of the printing device is capable of printing a distinct gamut volume of colors.
For some customers, the process of manually adjusting spot colors is far too difficult or time consuming.
These customers will always use the built-in static CMYK spot color dictionary and are forced to accept the potentially large accuracy errors that can occur with long term printer variation.

Method used

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  • Method and system of editing multiple spot color tables associated with a printing system
  • Method and system of editing multiple spot color tables associated with a printing system
  • Method and system of editing multiple spot color tables associated with a printing system

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Embodiment Construction

[0025]As briefly discussed in the background section, a custom spot color formula which is described in percentages of colorants to render a particular color is only valid for a particular mode or state of print engine operation. Any change in print engine operation that affects the gamut volume of colors printed, requires a changed formula in order for the printing engine to render that same color. A simple way of dealing with this problem is to force a user of the printing engine to maintain and edit the formula in a device independent color space, such as L*a*b*—which is exceptionally unintuitive. Another approach is to maintain an independent CMYK custom spot color table for each gamut the print engine supports, and force the user to manually maintain the desired custom color in numerous tables.

[0026]According to one exemplary embodiment, the disclosure provides a Digital Front End (DFE) maintaining multiple tables of custom spot color formulas, one per gamut the print engine is...

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PUM

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Abstract

This disclosure provides a method and system of generating a plurality of custom spot color look-up tables, each custom spot color look-up table associated with one of a plurality of modes associated with an image marking device. In addition, provided is a job workflow method and system which accesses the plurality of custom spot color look-up tables to print a custom spot color.

Description

BACKGROUND[0001]The disclosed embodiments generally relate to methods and systems for printer color management in image / text printing or display systems. The embodiments are directed to processes for generating improved spot color accuracy.[0002]To meet customer demand, the commercial printing industry requires the capability of producing spot colors accurately and consistently. Spot colors can be defined as a fixed set of colors which may be Pantone® colors, customer logo colors, colors in a customer's proprietary marked patterns, or customer defined colors in the form of an index color table. Spot colors are often used, or can be used, for large background areas, which may be the most color critical portion of a particular page. Consistent color in these areas may determine the difference between success and failure in meeting customer requirements. Customer demands for color accuracy and consistency are typically much tighter for spot colors than for colors within images.[0003]Ex...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04N1/60H04N1/40
CPCH04N1/603
Inventor SMITH, MARK A.
Owner XEROX CORP